cros_utils: clean up naming

Also fixed format to comply with yapf.

BUG=chromium:1099035
TEST=None.

Change-Id: I341ee97c2270f33548590daadb36050c2a6baaf6
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/toolchain-utils/+/2364722
Reviewed-by: Tiancong Wang <tcwang@google.com>
Tested-by: Jian Cai <jiancai@google.com>
1 file changed